860265

Appears in sequences

• Number of 2-elements orbits of S3 action on irreducible polynomials of degree 3n, n > 0, over GF(2).at n=25A165920
• Number of forests of labeled rooted trees of height at most 1, with n labels, two of which are used for root nodes and any root may contain >= 1 labels.at n=13A273652